How are tides useful for us?

Ans. Tides are useful to us in many ways:

The rise in water level during high tide allows big ships to enter or leave harbours safely.

During high tide, water rushes up the mouths of the rivers. This helps large ships to move in and out of river ports.

In cold countries, the sea water rushing in during high tide prevents harbours from freezing in winter.

The water at high tide can be stored behind in specially built dams used for hydroelectric power generation.